Detection of weak scatterers in reinforced concrete structures

Trela, Ch.; Kind, Thomas; Schubert, M.; Günther, Martin

doi:10.1109/icgpr.2014.6970552

Cited by 3 publications

(1 citation statement)

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“…GPR is widely used as a non-destructive technique in monitoring the health of concrete structures such as bridges, dams, tunnels, etc. Some of these applications include: moisture and chloride ingress; detection of rebar corrosion; and detection of voids and cracks [ 60 , 62 , 63 ]. GPR techniques for detecting moisture and chloride in concrete are based on energy loss by the GPR signals to water molecules and chloride ions due to increased conductivity.…”

Section: Gpr As a Contextual Sensor For Radiological Characterisatmentioning

confidence: 99%

Ground Penetrating Radar as a Contextual Sensor for Multi-Sensor Radiological Characterisation

Ukaegbu

Gamage

2017

Sensors

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Radioactive sources exist in environments or contexts that influence how they are detected and localised. For instance, the context of a moving source is different from a stationary source because of the effects of motion. The need to incorporate this contextual information in the radiation detection and localisation process has necessitated the integration of radiological and contextual sensors. The benefits of the successful integration of both types of sensors is well known and widely reported in fields such as medical imaging. However, the integration of both types of sensors has also led to innovative solutions to challenges in characterising radioactive sources in non-medical applications. This paper presents a review of such recent applications. It also identifies that these applications mostly use visual sensors as contextual sensors for characterising radiation sources. However, visual sensors cannot retrieve contextual information about radioactive wastes located in opaque environments encountered at nuclear sites, e.g., underground contamination. Consequently, this paper also examines ground-penetrating radar (GPR) as a contextual sensor for characterising this category of wastes and proposes several ways of integrating data from GPR and radiological sensors. Finally, it demonstrates combined GPR and radiation imaging for three-dimensional localisation of contamination in underground pipes using radiation transport and GPR simulations.

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Section: Gpr As a Contextual Sensor For Radiological Characterisatmentioning

confidence: 99%